Morphology Tailoring of ZnWO4 Crystallites/Architectures and Photoluminescence of the Doped RE3+ Ions (RE = Sm, Eu, Tb, and Dy)

Extensive tailoring of REPO4 and REVO4 crystallites via solution processing and luminescence

This article highlighted the recent achievements in crystal engineering of REPO4 and REVO4via solution processing, with an emphasis on solution chemistry, the role of chelate ion, crystallization mechanism and luminescence properties.

Effect of Li+ doping on the luminescence performance of a novel KAlSiO4:Tb3+ green-emitting phosphor

A new green-emitting phosphor, KAlSiO₄:1.5 mol% Tb³⁺, x mol% Li⁺, was prepared via a high-temperature solid-phase method, and its crystal structure, diffuse reflectance spectrum, and luminescence were studied. The results show that the Li⁺ doping shifts the strongest diffraction peak to a high angle direction, reducing grain size by 11.4%. The entry of Li₂CO₃ improves the luminescence performance of KAlSiO₄:1.5 mol% Tb³⁺. At a Li⁺ concentration of 1.5 mol%, the sample has strong absorption in the ultraviolet light range from 250 to 400 nm. The luminous intensity of the sample at 550 nm approximately quadruples after Li⁺ doping. Additionally, the colour purity of the sample and the internal quantum yield increase to 83.3% and 42%, respectively. The sample changes colour with time when exposed to air without an obvious fading phenomenon. The emission intensity at 200 °C is 95.1% of its value at room temperature, indicating that the phosphor has excellent thermal stability when x = 1.5. These results show the feasibility of using the silicate phosphor for generating the green light component of white light-emitting diodes for solid-state lighting.

A renewable photocatalytic system with dramatic photocatalytic activity for H2 evolution and constant light energy utilization: eosin Y sensitized ZnWO4 nanoplates loaded with CuO nanoparticles

Efficient photocatalytic system with light intensity-independent energy utilization for H2 evolution.

Crystallization and architecture engineering of ZnWO4 for enhanced photoluminescence

Crystal engineering of ZnWO₄ was achieved with oxalic acid and (NH₄)₂SO₄ as modifiers upon hydrothermal reaction, which produced nanorods, microplates and well-organized architectures that clearly show morphology-dependent photoluminescence.